yes
bluray
David Gregg was the inventor of the optical disk.
No. Optical storage uses lasers to "see" the media (e.g. CD, DVD, HD-DVD and BluRay)
optical
An Optical Disk
it is a CD(Compact Disk) and a DVD (Digital Video Disk)
no,harddisk is not an optical storage
an optical disk which stores data optically
A sector
Optical disk
optical disk storage are read only so they cannot get infected. But if you burn files which are infected by viruses then the optical disks can spread the virus
(a)- it is a read-only storage medium. Data once recorded, cannot be erased, and hence the optical disk cannot be reused. (b)- thd data access speed for optical disk is slower than magnetic disks; (c)- optical disk require a more complicated drive mechanism that magnetic disk.